Best trade fits by ballpark

The Rockies didn't actually pitch better at home (4.25 ERA at Coors vs. 4.02 on the road); the key was that their opponents had a much bigger split (5.76 ERA at Coors vs. 3.22 against the Rockies on the road). Thanks to a staff full of ground-ball artists like Aaron Cook, Jorge de la Rosa, Jhoulys Chacin and Ubaldo Jimenez, the Rockies weren't as affected by Coors Field as their opponents were. Colorado went 12-6 against the division-rival San Francisco Giants and Arizona Diamondbacks, who had the two biggest fly-ball pitching staffs in the National League.

As the 2011 trading season heats up, teams in extreme ballparks can look to gain the same sort of advantage in their home games. And as the trading activity heats up in the coming weeks, teams should steer clear of players who don't fit their home ballpark. Three-year park factors give a reasonably accurate indication of which types of hitters tend to thrive in each team's ballpark.

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